Big Ideas Ch 5 Vocabulary

Front

What is the equation for inverse functions?

Back

x = f(y) and y = f⁻¹(x)

Front

What is the term for the number or expression inside a radical symbol?

Back

Radicand

Front

What are functions that undo each other called?

Back

Inverse functions

Front

What is the term for the number that must be multiplied by itself n times to equal a given value?

Back

Nth root

Front

What is an apparent solution that must be rejected because it does not satisfy the original equation?

Back

Extraneous solution

Front

What is the notation for the inverse of a function f?

Back

f⁻¹(x)

Front

What is the term for a radical expression in its simplest form?

Back

Simplest form of a radical

Front

What is the index of a radical?

Back

The index indicates the degree of the root.

Front

What is a radical equation?

Back

An equation that contains a variable within a radical.

Front

What is the relationship between a function and its inverse?

Back

If f(x) = y, then f⁻¹(y) = x.